The Lambchops are on a family vacation to San Francisco, California. But when Stanley saves a girl from barreling down one of San Francisco's famously steep hills, he's shocked to find that she's actually been looking for him. The girl, Lily, is trying to perform an amazing trick that no one has ever done before—escaping from Alcatraz prison—and she needs Stanley's help! Can the famous flat boy lend a hand to pull off this tricky stunt?